Regulations observed in NOTOS 2021 (all texts are in English):
- FIP SREV and Guidelines for Traditional Philately
- FIP SREV and Guidelines for Postal History
- FIP SREV and Guidelines for Postal Stationery
- FIP SREV and Guidelines for Aerophilately
- FIP SREV and Guidelines for Astrophilately
- FIP SREV and Guidelines for Revenues
- FIP SREV and Guidelines for Thematic Philately
- FIP SREV and Guidelines for Maximaphily
- FIP SREV for Youth Philately
- FEPA Special Regulations for Philatelic Literature